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MB7076

XL-MaxSonar®- WR/WRC™ Series High Performance, IP67 Weather Resistant, Ultrasonic Range Finder

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Sensor Descriptions

XL-MaxSonar® - WR/WRC™ Series

Base Sensor (MB7060, MB7070 & MB7155)

The MB7060, MB7070 & MB7155 are the base models of the XL-MaxSonar-WR sensor line. These sensors are recommended

for general purpose usage. All other sensors in this series are based off these sensor models. The additional features are

mentioned in their respective sections below.

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XL-MaxSonar-WR1 (MB7062 and MB7072)

The XL-MaxSonar-WR1 sensors feature a 3 reading stability filter that ranges to the first detectable target. Filtering is available

on Pin3 (AN) and Pin 5 (TX). Filtering is not applied to the output on Pin 2 (PW). This filter requires that

3 consecutive range readings are within 1cm of each other to be considered a valid range reading. If the range readings are

outside 1-cm, the sensor discards the range reading set and reports the last valid range reading. This sensor does not view

maximum range as a valid range, and will not report 765 when no target is detected. If this sensor does not detect a target for 1

hour, the sensor will go into fail-safe and report 000.

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XL-MaxSonar-WRL (MB7066 and MB7076)

The XL-MaxSonar-WRL will report a maximum distance of 10 meters for large targets.

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XL-MaxSonar-WRM (MB7052, MB7092 & MB7150)

The MB7052, MB7092 & MB7150 sensors prioritize large targets over both small targets and noise. These sensors report the

target that gives the largest acoustic reflection. This stands in contrast to other units such as the MB7060 which are designed to

report the distance to the first detectable target. If the largest target is removed from the field of view, the MB7052, MB7092 &

MB7150 will switch to the target that gives the next largest detectable return.

When targets are of similar amplitude reflections, preference is given to the closer target. The sensor expects to see a target by

7.56 meters. If no target is found, the sensor will increase in sensitivity until a target is found, or until no targets can be found.

In addition to the most-likely filtering, the MB7052, MB7092 & MB7150 come equipped with a three-reading filter and reading

hold which requires three consecutive range readings within 1cm of the most recent reading to be considered a valid range

reading. If readings are found to be outside 1cm, or no target can be found by the sensor, then the sensor will report the last

valid range reading. Upon power-up the sensor will default to reporting 7.65 meters unit a valid range reading is found.

The last reading hold is designed for users operating in environments with intermittent high noise who desire to poll the

MB7052, MB7092 & MB7150 at intermittent times. This allows the sensor to report the previously valid reading until the

sensor’s environment improves. If no valid range reading is found for ~1.5 hours, the sensor will send a fail-safe output “000”

on all interfaces.

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XL-MaxSonar-WRML (MB7051)

The MB7051 includes all the features of the MB7052 with a maximum distance of 10 meters which provides a very robust long

range sensing solution. The MB7051 is ideal for applications requiring small or soft target detection at longer ranges than our

previously mentioned XL-MaxSonar-WR sensors.

The MB7051 has improved sensitivity to objects with the addition of a horn extension. This improvement results in the sensor

detecting objects of similar size about 2.5 times further in comparison to the MB7066 sensor. The detection patterns of each are

shown in the beam pattern section of the datasheet.

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XL-MaxSonar-WRML1 (MB7053)

The MB7053 is based on the MB7051 but removes the three reading stability filter. This prevents the sensor from entering a fail

-safe mode where it reports 000. It also allows the MB7053 to respond to large changes in range more quickly than the

MB7051.

MaxBotix® Inc.

Copyright 2005 - 2021 MaxBotix Incorporated

Patent 7,679,996

MaxBotix Inc., products are engineered and assembled in the USA

Page 4

Web: www.maxbotix.com

PD11838v

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